Delmhorst Instrument BD-10 - Manual (Page 4)

BEFORE YOU BEGIN
The BD-10 features two scales — one marked
“wood” and the other marked “reference”. The
wood scale
#
is used when testing wood and the
reading indicates the percentage moisture content.
The reference scale
$
reads from 0-100 and is
used when testing any building material such as
plaster, concrete, brick, insulation, etc. Readings
on the reference scale
$
are to be taken as a
qualitative indication of the moisture level.
Readings in the low end of the scale indicate a
“drier” condition; readings in the upper end of the
scale indicate a higher moisture level in the material.
The scale is color coded with green, yellow, and
red areas. Readings may be interpreted as green
(dry), yellow (borderline), red (wet).
When using the reference scale
$
, tests should be
made on material samples that are known to be
dry. Such readings can be used as standards or
reference points against which subsequent readings
should be compared.
CHECK CALIBRATION
hPress the calibration check button
@
. Meter is in calibration
if the needle pointer moves to “20” on the wood scale
#
.
Any reading within the green band on the dial is acceptable.
Make sure the contact pins
%
are not in contact with
anything when checking the calibration.
If you check the calibration and the needle does not read
within the green band, it is likely an indication of a low bat-
tery. If this occurs, change the battery (9-Volt) immediately.
Continued use with a low battery may cause the meter to go
out of calibration. If you have a fresh battery and the
instrument still does not indicate a proper calibration,
return it to DELMHORST for service. See
Service for Your
Meter section for details.
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